/*
 * Ion xinerama module
 * based on mod_xrandr by Ragnar Rova and Tuomo Valkonen
 *
 * by Thomas Themel <themel0r@wannabehacker.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License,or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not,write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */


#include <X11/Xlib.h>
#include <X11/extensions/Xinerama.h>
#include <ioncore/common.h>
#include <ioncore/global.h>
#include <ioncore/mplex.h>
#include <ioncore/group-ws.h>
#include <ioncore/sizepolicy.h>
#include <ioncore/../version.h>

#ifdef MOD_XINERAMA_DEBUG
#include <stdio.h>
#endif

char mod_xinerama_ion_api_version[]=ION_API_VERSION;

static int xinerama_event_base;
static int xinerama_error_base;

bool mod_xinerama_init()
{
  WRootWin* rootWin = ioncore_g.rootwins;
  Display* dpy = ioncore_g.dpy;
  int scrNum,nScreens;
  XineramaScreenInfo* sInfo;
  WScreen* new;

  int nRects;
  int i;

  if(XineramaQueryExtension(dpy,&xinerama_event_base, &xinerama_error_base))
  {
    XineramaScreenInfo* sInfo;
    sInfo = XineramaQueryScreens(dpy, &nRects);

    if(!sInfo)
    {
      warn(TR("Could not retrieve Xinerama screen info, sorry."));
      return FALSE ;
    }

    for(i = 0 ; i < nRects ; ++i)
    {
      WFitParams fp;
      WMPlexAttachParams par = MPLEXATTACHPARAMS_INIT;

      WScreen* newScreen;
      WRegion* reg=NULL;
#ifdef MOD_XINERAMA_DEBUG
      printf("Rectangle #%d: x=%d y=%d width=%u height=%u\n",
             i+1, sInfo[i].x_org, sInfo[i].y_org, sInfo[i].width,
             sInfo[i].height);
#endif
      fp.g.x = sInfo[i].x_org;
      fp.g.y = sInfo[i].y_org;
      fp.g.w = sInfo[i].width;
      fp.g.h = sInfo[i].height;
      fp.mode = REGION_FIT_EXACT;

      par.flags = MPLEX_ATTACH_GEOM|MPLEX_ATTACH_SIZEPOLICY|MPLEX_ATTACH_UNNUMBERED ;
      par.geom = fp.g;
      par.szplcy = SIZEPOLICY_FULL_EXACT;

      newScreen = (WScreen*) mplex_do_attach_new(&rootWin->scr.mplex, &par,
                                                 (WRegionCreateFn*)create_screen, NULL);

      if(newScreen == NULL) {
        warn(TR("Unable to create Xinerama workspace %d."), i);
        XFree(sInfo);
        return FALSE;
      }

      newScreen->id = i ;

    }

    XFree(sInfo);
    rootWin->scr.id = -2;
  }
  else
    warn(TR("No Xinerama support detected, mod_xinerama won't do anything."));

  return TRUE;
}


bool mod_xinerama_deinit()
{
  return TRUE;
}
